The valkyrie of the Democratic Party says she urged President Obama to do more to aid Syrian rebels years ago. And last summer, she supported air strikes on Bashar Assad’s regime.

Had we followed her advice and crippled Assad’s army, ISIS might be in Damascus today, butchering Christians and Alawites and aiding the Islamic State in Iraq in overrunning Baghdad.

But if the folly of attacking Assad’s army and weakening its resistance to ISIS terrorists is apparent to everyone this summer, why were Clinton, Obama and Secretary of State Kerry oblivious to this reality just a year ago?

Consider the rest of Hillary’s record. Her most crucial decision as Senator came in 2002 when she voted to invade Iraq. She now concedes it was the greatest mistake of her Senate career.

She voted against the surge in 2006, but confided to Defense Secretary Bob Gates that she did so to maintain her political viability for 2008.

This is statesmanship? Not voting your convictions about what is best for your country at war, so as not to antagonize the liberals in the Iowa caucuses?

In 2009, Hillary presented a “reset button” to Vladimir Putin’s foreign minister. In 2011, she supported U.S. air strikes to bring down Col. Gadhafi and celebrated in Tripoli when he was overthrown and lynched.

How did that work out? Libya is today a hellhole of mayhem and Islamists are threatening a takeover. Who did Hillary think would rise when Gadhafi fell?

Hillary’s failure to anticipate or prevent the Benghazi massacre and her role in the botched cover-up, all concede, are burdens she will carry into the primaries in 2016, should she run.

Where, then, has Hillary exhibited the acumen to suggest she would be a wise and savvy steward of U.S. foreign policy in a disintegrating world?

Is this a convincing argument for the Republican alternative?

Hardly. The principal GOP voices on foreign policy, who get more airtime than Wolf Blitzer, are John McCain and Lindsey Graham.

Their track record: McCain wanted to confront Putin over South Ossetia. He and Graham wanted to arm Ukrainians to fight the Russians in Crimea, Luhansk and Donetsk. They wanted Moldova, Ukraine and Georgia brought into NATO, so that if war were to break out, we would be fighting the Russians alongside them.

This year, Graham was trolling around a resolution to give Obama a blank check to attack Iran.

Last year, McCain and Graham were for attacking Assad’s army. This year they are for bombing ISIS, which is attacking Assad’s army.

But if Hillary, McCain and Graham have been repeatedly wrong about Syria, what do we now? Answer: Stop and think.

First, this war in Syria and Iraq, like all such wars, is eventually going to be won by soldiers, by boots on the ground, by troops who can take and hold territory. And in such wars, as Napoleon said, God is on the side of the big battalions.

No nation is less threatened by ISIS than ours. And as the Syrians, Turks, Kurds and Iraqis have the proximity and manpower to defeat ISIS, they should do this job themselves.

Turkey shares a 550-mile border with Syria and could crush ISIS. But if President Recep Tayyip Erdogan wishes to play games, out of hatred of Assad, let the Turks live with the consequences.